在一周中的特定日子重复本地通知（Swift 3 IOS 10）

Question

我正在尝试为一周中的特定日期（例如星期一、星期三等）安排本地通知，然后每周重复一次。 这是设置通知的屏幕的外观：

用户可以选择通知时间和重复天数。

我安排单个非重复通知的方法如下所示：

static func scheduleNotification(reminder: Reminder) {
    // Setup notification content.
    let content = UNMutableNotificationContent()
    
    //content.title = NSString.localizedUserNotificationString(forKey: "Reminder", arguments: nil)
    content.body = NSString.localizedUserNotificationString(forKey: reminder.reminderMessage, arguments: nil)
    content.sound = UNNotificationSound.default()
    
    
    // Configure the triger for specified time.
    // 
    let dateComponentes = reminder.dateComponents
    // TODO: Configure repeating alarm
    
    // For the testing purposes we will not repeat the reminder
    let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponentes, repeats: false)
    
    // Create the request object.
    let request = UNNotificationRequest(identifier: "\(reminder.reminderId)", content: content, trigger: trigger)
    
    // Schedule the request.
    let notificationCenter = UNUserNotificationCenter.current()
    notificationCenter.add(request) { (error: Error?) in
        if let theError = error {
            print(theError.localizedDescription)
        }
    }
}

从 UIDatePicker 小部件中提取日期组件并存储在提醒类中：

let date = reminderTimeDatePicker.date.addingTimeInterval(60 * 60 * 24 * 7)
let components = Calendar.current.dateComponents([.weekday, .hour, .minute], from: date)
...
reminder.dateComponents = components

我有一个数组selectedDays[Int]（作为提醒类的属性）来保存应该触发通知的星期几的信息。

如何在一周中的特定日期安排通知以及如何每周重复一次？

即使是一条评论也会有所帮助，并提前感谢您。

Answer 1

您可以使用以下函数从选定的选择器值中获取日期：

    //Create Date from picker selected value.
    func createDate(weekday: Int, hour: Int, minute: Int, year: Int)->Date{

        var components = DateComponents()
        components.hour = hour
        components.minute = minute
        components.year = year
        components.weekday = weekday // sunday = 1 ... saturday = 7
        components.weekdayOrdinal = 10
        components.timeZone = .current

        let calendar = Calendar(identifier: .gregorian)
        return calendar.date(from: components)!
    }

    //Schedule Notification with weekly bases.
    func scheduleNotification(at date: Date, body: String, titles:String) {

        let triggerWeekly = Calendar.current.dateComponents([.weekday,.hour,.minute,.second,], from: date)

        let trigger = UNCalendarNotificationTrigger(dateMatching: triggerWeekly, repeats: true)

        let content = UNMutableNotificationContent()
        content.title = titles
        content.body = body
        content.sound = UNNotificationSound.default()
        content.categoryIdentifier = "todoList"

        let request = UNNotificationRequest(identifier: "textNotification", content: content, trigger: trigger)

        UNUserNotificationCenter.current().delegate = self
        //UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
        UNUserNotificationCenter.current().add(request) {(error) in
            if let error = error {
                print("Uh oh! We had an error: \(error)")
            }
        }
    }

从选择器获取值后，通过选择器小时、分钟和年份，选择的工作日为（星期日 = 1，星期一 = 2，星期二 = 3，星期三 = 4，星期四 = 5，星期五 = 6，星期六 = 7）函数func createDate(weekday: Int, hour: Int, minute: Int, year: Int) 以每周为基础获取通知触发日期，并在获取日期后调用函数func scheduleNotification(at date: Date, body: String, titles:String) 以安排通知。

Answer 2

 let content = UNMutableNotificationContent()
 content.title = NSString.localizedUserNotificationString(forKey: "Wake up!", arguments: nil)
 content.body = NSString.localizedUserNotificationString(forKey: "Rise and shine! It's morning time!",
                                                                arguments: nil)
 content.categoryIdentifier = "TIMER_EXPIRED"

 let weekdaySet = [6,5]

   for i in weekdaySet {

        var dateInfo = DateComponents()
        dateInfo.hour = 16
        dateInfo.minute = 44
        dateInfo.weekday = i
        dateInfo.timeZone = .current

        let trigger = UNCalendarNotificationTrigger(dateMatching: dateInfo, repeats: true)
        let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
        center.add(request) { (error : Error?) in

        if let theError = error {
                print(theError.localizedDescription)
                }
            }
       }